Hook n ladder 1 Posted October 8, 2015 Share Posted October 8, 2015 I just started getting a new vibration ( at about 50-60 mph) Its the same loaded, empty, accelerating, coasting in gear and coasting in neutral. Once i drop below 50 sometimes down to 45 it pretty much goes away. At about 65 it also isn't as noticible.I checked everything in the front end. It all looks tight. tires all good. thanks Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/ Share on other sites More sharing options...
mrsmackpaul Posted October 8, 2015 Share Posted October 8, 2015 check the bolt that holds the yoke to transmission out put shaft they have been known to come loose Paul Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/#findComment-306624 Share on other sites More sharing options...
Timmyb Posted October 8, 2015 Share Posted October 8, 2015 Is the vibration coming through the steering wheel? Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/#findComment-306638 Share on other sites More sharing options...
Hook n ladder 1 Posted October 8, 2015 Author Share Posted October 8, 2015 Well, yes and no. I get a wobble at about 40 in the wheel. But the new vibration shakes the entire truck. One thing I forget to mention is that on curves on the expressway the vibration gets worse. Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/#findComment-306658 Share on other sites More sharing options...
Hook n ladder 1 Posted October 11, 2015 Author Share Posted October 11, 2015 Could this be a wheel bearing issue and or kingpins? Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/#findComment-307083 Share on other sites More sharing options...
Timmyb Posted October 11, 2015 Share Posted October 11, 2015 A wobble through the steering wheel would make me guess the front wheels are out of balance. But as far as the whole truck, it could be a lot of things. Ive never had the pleasure of experiencing such a thing. I could throw out some ideas however, check your drive shafts. They have a weight welded on to balance them, make sure it hasn't fallen off. Centre bearing and uni joints. Out of round tyre. Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/#findComment-307101 Share on other sites More sharing options...
Dirtymilkman Posted October 12, 2015 Share Posted October 12, 2015 If its worse on curves it's more than likely tire balance on steers.. Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/#findComment-307168 Share on other sites More sharing options...
Hook n ladder 1 Posted October 28, 2015 Author Share Posted October 28, 2015 Turned out to be a bad U-joint off the carrier bearing. It was checked once and seemed tight, checked a second time with a pry bar and there was just a small amount of play. Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/#findComment-309071 Share on other sites More sharing options...
Timmyb Posted October 28, 2015 Share Posted October 28, 2015 Good find, glad it was nothing major! And thanks for the feedback, for an untrained guy like me these problems/cures are locked away in the memory bank. Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/#findComment-309099 Share on other sites More sharing options...
220cummins Posted October 28, 2015 Share Posted October 28, 2015 Check your driveline for wear or play and check your tires. I had a Freightliner FL70 box truck do the same thing. It was the drive tires out of balance. I jacked it up and spun the wheels slowly. The wheel went back the opposite way I spun it. I put a couple balance bags in the the tires and it made it for away. Quote Link to comment https://www.bigmacktrucks.com/topic/42092-high-speed-vibration/#findComment-309102 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.